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Electrochemical Generation of Superoxide Ions in five different Fluorine rich Room Temperature Ionic Liquids
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نویسنده
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Sethupathy K Praneshwar ,Monnier John R. ,Matthews Michael A. ,Weidner John W.
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منبع
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analytical and bioanalytical electrochemistry - 2013 - دوره : 5 - شماره : 6 - صفحه:711 -718
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چکیده
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Stable superoxide ion o2?- is electrochemically generated in five room temperature ionic liquids namely 1-hexyl-3-methylimidazolium hexafluorophosphate [hmim][pf6], 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [bmim] [btfmsi], 1-butyl-2,3-dimethylimidazolium bis(trifluoromethylsulfonyl)imide [bdmim] [btfmsi], n-butyl-n-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide [n-bu-n-mepyrr] [btfmsi], 1-butyl-2,3-dimethylimidazolium tetrafluoroborate [bdmim] [bf4]. cyclic voltammetry studies were used to check for the short-term stability of o2?- in these rtil’s. in the absence of impurities, especially water, the o2?- is stable in these three rtil’s in the timescale of the cyclic voltammetry. the formal potential for the o2/ o2?- couple is found to be -0.86 v vs. ag/agcl reference electrode. hydrophobicity, viscosity, oxygen solubility and electrical conductivity were found to be key parameters in the generation of stable superoxide ions in rtils
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کلیدواژه
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Superoxide ,Ionic liquids ,Cyclic voltammetry ,Oxygen reduction
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آدرس
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University of South Carolina Columbia, Center for Electrochemical Engineering, Department of Chemical Engineering, University of South Carolina Columbia, SC 29208, Columbia, University of South Carolina Columbia, Center for Electrochemical Engineering, Department of Chemical Engineering, University of South Carolina Columbia, SC 29208, Columbia, University of South Carolina Columbia, Center for Electrochemical Engineering, Department of Chemical Engineering, University of South Carolina Columbia, SC 29208, Columbia, University of South Carolina Columbia, Center for Electrochemical Engineering, Department of Chemical Engineering, University of South Carolina Columbia, SC 29208, Columbia
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پست الکترونیکی
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weidner@engr.sc.edu
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Authors
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